Improvement in furnace-grates



c. H. HAnlsnN.- Furnace-firater Patented Apriu 13,1875.

I .4.' E 3G E W l j W A L- l/A A. v\

DSF D @Hummm l inventor: ffrQ/ /b E mam, wfwm. *Y

- .D :ff 'D A ad?? THE GRAPHIC C0.PHOT0,LITH.39&4\ PARK PLAGEJLY.

CHARLES H. HARRISON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR O F ONE-HALF HIS RIGHT TO WILLIAM H. HARRISON, OF SAME PLAGE.

IMPROVEMENT IN FU'RNACE-GRATES.

Specification forming part of Letters Patent No. 162,064, dated April 13, 1875; application filed March 30, 1875.

To all whom it may concern Be it known that I, CHARLES H. HARRI- SON, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Grates; and I do hereby declare the following to be a full, clear, and exact description of the nature thereof, sufficient to enable others skilled in the art to which my invention appertains to fully understand, make, and use the same, reference being had to the accompanying drawings making part of this specification, in which- Figure 1 is a top or plan view of the device embodying my invention. Fig. 2 is a bottom view thereof. Fig. 3 is a transverse section in lineman, Fig. 1. Fig. 4 is a similar view in line y y, Fig. 1. Fig. 5 is a rear-end view thereof. Fig. 6 is a top view of a detached part.

Similar letters of reference indicate corresponding parts in the several figures.

My invention relates to a grate which is more especially adapted to what is known as the low-down and half low-down Philadelphia grate; and it consists in'a seriesot' longitudinally-sliding bars, which receive motion by a transversely-arranged oscillating lever, Whose operating end is in front of the tire. It also consistsin -a double bed-plate, the inner section of which carries the grate-bars and operatinglever thereof, and is formed with pendent sockets, in which are suspended guiding-snpports for said bars. It further consists in forming together the guiding-supports ofthe bars and the center stationary bar, which constitutes the fulcrum of the operating-lever. It also consists in the construction 1ot' the lever of the grate-bars so that it easily operates said bars, and may be readily removed therefrom.

Referring to the drawings, A represents a bed-plate, which consists of an open frame to be set in desired position. W'ithin said bedplate is arranged another bed-plate, B, Which rests on ledges C, formed on the corners or inner sides of the outer plate A. From the front and rear sides of the inner plate B there depend sockets D D, whose openings face each other, and access being had thereinto from the top of the plate B. E represents a series of longitudinally-arranged grate-bars, which are fitted in openings or grooves a, of transverselyextending supports F, whose ends enter the depending sockets D of the plate B, so that said supports are suspended from and sustained by the inner plate B. The center gratebar G is formed with the supports F, and thus made stationary thereon; but the other bars, E, have a sliding motion on the supports F, and

p on their Linder sides there are downwardly-projecting studs or pivots, H, which enter openings in a transversely-extending lever, J, whose axis is on the center bar G. and has its rear end c project and play in a longitudinal slot, b, in the rear side of the plate B, and the other end, d, extends upwardly in a space between the inner and outer plates A B, and then forward, so as to come in front of the plates, and consequently in front of the re.

The operation is as follows When the grate requires shaking, the end d of the lever J is grasped and reciprocated, so that sliding motions are imparted to the series of bars E, of which those on one side of the central bar G will move in a contrary direction to those on the other side thereof, whereby the fire will be more easily and fully raked.

When the bars require removal for application of new bars, cleansing of the grate, or otherwise, the lever J will be brought to the center, as shown in Fig. l, and then elevated, so that the inner bed-plate B will be raised, in which motion it carries the severa-l bars E G, supports F, and lever J, the rearledges() constituting the fulcrum ot' the bed-plate. The lever J may be easily disengaged from the studs of the bars by simply removingit therefrom, and the bars can then be displaced without difficulty. The supports F are now Withdrawn from the pendent sockets D, and thus all parts are detached. The replacement of the parts is accomplished in the order reversely to that stated.

It will be seen that the lever willY be supported at both ends, and thus render unnecessary pins, keys, or other fastenings for the bars and said lever. It will also be noticed that in low-down and half-down grates the shaking or raking can be readily accomplished from below the iire--a characteristic of great service, inasmuch as poking or raking from above is objectionable and incomplete in its operation.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The series of longitudinally-sliding gratebars E and stationary bar G, in combination with the transversely-arranged operating-lever J, substantially as and for the purpose set forth.

2. The outer bed-plate A, in combination with the inner bed-plate B,formed With pendent sockets D, the supports F, suspended in saidsockets, and sliding grate-bars E, removably fitted to said supports, substantially as and for the purpose set forth.

3. The combination, with the grate bars E and bedplate B, of the grooved. supports F and center bar G, cast together and made removable, said center bar forming the axis of the operating-lever J, substantially as and for the purpose set forth. i

4. The lever J, jointed to the sliding bars E, tted at its rear end c in the slot b of the inner becLplate, and projecting at its forward end d between the outer and inner plates, and in front of said plates, substantially as and for the purpose set forth.

5. The grate consisting of the outer bed plate A, with ledges C, theinner bed-plate B, with grooved supports F, sliding grate-bars E, center bar G, and oscillating lever J, substantially as and for the purpose set forth.

CHARLES H. HARRISON.

Witnesses:

JOHN A. WIEDERSHEIM, ALBERT H. BOECKLEY. 

